SN65HVD888
- Exceeds requirements of EIA-485 standard
- Bus-polarity correction within 76ms (tFS)
- Data rate: 300bps to 250kbps
- Works with two configurations:
- Failsafe resistors only
- Failsafe and differential termination resistors
- Up to 256 nodes on a bus (1/8 Unit Load)
- SOIC-8 Package for backward compatibility
- Bus-pin protection:
- ±16kV HBM protection
- ±12kV IEC61000-4-2 Contact discharge
- +4kV IEC61000-4-4 Fast transient burst
The SN65HVD888 is a low-power RS-485 transceiver with automatic bus-polarity correction and transient protection. Upon hot plug-in, the device detects and corrects the bus polarity within the first 76ms of bus idling. On-chip transient protection protects the device against IEC61000 ESD and EFT transients. This device has robust drivers and receivers for demanding industrial applications. The bus pins are robust to electrostatic discharge (ESD) events, with high levels of protection to Human-Body Model (HBM), Air-Gap Discharge, and Contact Discharge specifications.
The device combines a differential driver and a differential receiver, which operate together from a single 5V power supply. The driver differential outputs and the receiver differential inputs are connected internally to form a bus port suitable for half-duplex (two-wire bus) communication. The device features a wide common-mode voltage range making the device suitable for multi-point applications over long cable runs. The SN65HVD888 is available in an SOIC-8 package, and is characterized from –40°C to 125°C.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | SN65HVD888 Bus-Polarity Correcting RS-485 Transceiver With IEC-ESD Protection datasheet (Rev. D) | PDF | HTML | 2025/9/3 | ||
| 應用說明 | How to Properly Set Up THVD1505 and SN65HVD888 in Applications | PDF | HTML | 2021/12/15 | |||
| 技術文章 | How much loading can an auto-polarity RS-485 bus support? | PDF | HTML | 2018/5/24 | |||
| 技術文章 | Power a RS-485 transceiver with a high efficiency flyback converter | PDF | HTML | 2017/12/27 | |||
| 類比設計期刊 | Correcting cross-wire faults in modern e-metering networks | 2013/10/28 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
RS485-HF-DPLX-EVM — RS-485 半雙工評估模組
TIDA-00263 — 隔離自動極性 RS-485 收發器參考設計
此參考設計展現隔離式 RS-485 匯流排節點，可自動修正因跨線故障所造成的反向匯流排訊號極性。此設計提供暫態防護，可保護訊號路徑免受 IEC 61000 暫態抗擾性標準系列中規定的 ESD、EFT 及突波暫態的影響。隔離式 DC-DC 轉換器運用推挽式轉換器原理，在隔離層中提供電源。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| SOIC (D) | 8 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。